Ball-bearing.



P. S. RYDBECK.

' BALL BEARING.

APPLICATION FILED JUNE 11. 1918.

1,287,761 Patented Dec. 17, W18.

INVENTOR W W By Attorneys, 6W QDWJQ 6' W lit PATRIK SAMUEL SVENSKA KULLAGERFABRIKEN, OF GOTTENBOBG, SWEDEN.

SWEDEN.

Specification 'of Letters Patent.

RYDIBECK, 0F GOTTENBORG, SWEDEN, ASSIGNOR TO AKTIEBQLAGET A CORPORATION OF BALL-Brianne.

Patented Dec. 1'3, i918.

Application filed June 11, 1918. Serial No. 239,390.

Be it known that. I, PATRIK SAMUEL RYD- nnen, a subject of the King of Sweden, residing at Gottenborg, Sweden, have invented certain new and useful Improvements in Path-Bearings, of which the following is a specification, reference being had to the drawing accon'ipanying andxt'orm ing a part. thereof.

This invention relates to ball bearings of the annular type comprising two race rings made with the greatest accuracy and having uninterrupted race-ways and balls therebetween which keep the whole together to a non-adjustalile machine element. The said ball hearings. on account of their working safety and their capacity of supporting great. loads. have obtained a wide use. For many purposes, however, the normal ball hearings will he too expensive, and in many cases a cheaper product may he used, for instance, for lesser t leinaiuls on the loading eapacl y.

The object of the invention is to produce such a cheap annular ball'bearing the race rings oi which are made by pressing or r0llin; oi pieces of tubes or sheet metal.

The invention consists, chiefly, in that the impressions or expressions, respectively, in the ring body forming the race grooves are arranged to bear directly on the casing and the shaft, respectively, in the plane passing through the points of contact of the balls with the said grooves. ly this is gained that the load will be transmitted from the shaft through the race rings nd the balls to the cas rg \vitlmutany yiehring taking placc,by which. the bearing capacity of the ball hearin o will be substantially independent of the thickness of the ring. therefore, be comparatively small, and, in a bearing of prcdcterniined dimensions, the size of the balls may thus be correspondingly increased, by which a comparatively high bearing capacity is obtained. i

In the drawing, a single, row radial ball bearing according to the invention is shown by way of example.

Referring to the drawing, the race rings 1 and 2 are, preferably, made of steel tubes out This thickness may,

off into pieces of suitable length-whereupon the race grooves are formed by pressing or rolling, said procedure being performed, if desired, under such pressure that the grooves of the rings attain a hardness suflicient for certain conditions. If a greater hardness be desired, the rings may be tempered and, preferably, the grooves treated by subse quent grinding and polishing. It is obvi ous that such a method is considerably cheaper than the ordinary method of turning in lathes and, besides, a considerable f saving of material is obtained.

As shown in the figure, the expression forming the groove in the inner ring 2 is arranged to bear directly on the shaft 4, while the impression iornung; the groove in the outer ring 1 bears direetly on the casing 5 in the center plane A i-t containing the points of contaet 'ot' the balls 3 with the said race grooves. by which the advantage is gained, as hereinbetore mentioned, that the load will be transmitted, without yielding,

from the shaft 4 to the casing 5. p

In order to facilitate the mounting of the bearing, the shoulder of the outer ring l confining the groove at one side is made lower than the corresponding shoulder at the other side. Obviousl this may as Well be the case in the innerlring 2 or in both rings. The said shoulder of one of the rings may also be wholly removed so that the ey lindrical inner surface of the said ring will be in axial alinement with the bottom of the groove at the center plane of the halls, by which the hearing will permit axial movements of the shaft.

The mounting of the bearing shown in the drawing is peri ormed by first placing the balls 3 around the inner ring 2 and then pressing the outer ring 1 overthe balls in making use of the elasticity of the rings.

What it claim is 1.' A. ball bearing" comprising sheet metal race rings having grooves conforming to and adapted to receive the balls, and in which outermost points of contact of the balls with the said grooves.

2. A ball bearing consisting of sheet metal race rings having ball recesses conforming 5 to and adapted to receive balls and en arranged that the balls make Contact at their outennost points with the adjacent surfaces of the race rings in a plane which passes through the points 0f cnutac't between the outer surfaces of the raverings autlan axle l0 and housing.respectively.

In testimony whereof 1 aflix my signature.

PATRIK SAMUEL R YDB ICC K. 

